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import cv2
import numpy as np


def resize_image(input_image, resolution, interpolation=None):
    H, W, C = input_image.shape
    H = float(H)
    W = float(W)
    k = float(resolution) / max(H, W)
    H *= k
    W *= k
    H = int(np.round(H / 64.0)) * 64
    W = int(np.round(W / 64.0)) * 64
    if interpolation is None:
        interpolation = cv2.INTER_LANCZOS4 if k > 1 else cv2.INTER_AREA
    img = cv2.resize(input_image, (W, H), interpolation=interpolation)
    return img